Anti-theft device



FIG. 1 is a top, front, and left side perspective view of an anti-theft device showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is an enlarged front elevational view thereof;

FIG. 6 is an enlarged bottom plan view thereof;

FIG. 7 is an enlarged rear elevational view thereof;

FIG. 8 is a top, front, and right side perspective view thereof;

FIG. 9 is a top, front, and left side perspective view thereof, showing an alternate, unclaimed environment; and,

FIG. 10 is a top, front, and left side perspective view thereof, showing another alternate, unclaimed environment.

The fragmentary broken-line disclosure of portion of an automobile console in FIG. 8, and the broken-line disclosure of unclaimed portions of the device in the other views are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an anti-theft device, as shown and described. 